dm-pcache: reject a kset that overruns its segment
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 6.18.52, 7.2.10
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
In the Linux kernel, the following vulnerability has been resolved: dm-pcache: reject a kset that overruns its segment cache_replay(), the writeback worker and the GC worker read a kset of get_kset_onmedia_size() bytes and advance the position by it. A forged key_num makes that size exceed the segment's remaining space, so the advance walks past the segment and trips the cache_pos_advance() BUG_ON. Reject a kset whose on-media size exceeds cache_seg_remain() before use.
Timeline
- CVE published
- Record last updated
Affected versions
- Linux Linux
From 1d57628ff95b32d5cfa8d8f50e07690c161e9cf0 · fixed in 01a700e9278da5706c865b9ca3ae70fdb7b4531d; From 1d57628ff95b32d5cfa8d8f50e07690c161e9cf0 · fixed in 96e2863b1f81ea61b8d8d5d5a45d3b4c018f8e10; From 1d57628ff95b32d5cfa8d8f50e07690c161e9cf0 · fixed in 7ac1f10f987a2ffae4aecf0e2ceca8f552b665cb
- Linux Linux
6.18
- KernelLinux
From 6.18.0 · fixed in 6.18.52; From 6.19.0 · fixed in 7.2.10